Question

D). 1) State the modern periodic law of classification of elements.

2) The following table shows the elements represented by the letters A, B, C, D, E, F, G and H
Groups
1 , 2, 12 ,13 ,14 ,15 ,16 ,17 ,18
Elements А B C D E F G H
a) Identify the i)
Biggest and
ii) Smallest element from the given table

b) Which element has valency equal to
1) 3 and ii) 0

Answer 1

Answer:

2 a ii the element from the give tabel was verry esye